Laptop sound booster

I have this Asus X80 laptop with built-in realtek HD sound card, but I hate it when I watch movies, The sound is too low and sometimes I don't understand conversation of the movie I watch. So do you have any idea where to get or to download software or program to make my speaker boost a little. I've search google but failed fo find one. I remember that I have mylot beside me, so I ask my self to give it a try. I believe their is somebody or someone to help me where to get that software I want to boost my speeaker volume.